Constant speed during engine break-in period - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 12-14-2015 Thread Starter
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Constant speed during engine break-in period

Hello everyone, I'm a new member and this is my first post. I took delivery of my guard green 2016 mustang gt pp on October 30th and I've got close to 1,700 miles on it. It takes me about an hour and fifteen minutes to get to my parents house 50 miles away and I've driven there about ten times since I got the car. I read in the manual not to drive at constant speed for the first 500 miles. I did use the adaptive cruise control and there is an interstate loop about 30 minutes into the trip so I did change speed dramatically once during every trip. Based on this information, what are the chances I've dropped the ball on the break-in period and created a flat space in the power band? I've done everything else right for break-in but I'm worried I may have robbed my new baby of her full performance potential. I"m very curious to hear everyones thoughts on the matter.

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post #2 of 9 (permalink) Old 12-14-2015
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Worst case scenario you will have slightly more blow by than others and that means power will be down a little bit. It also means that the oil will end up with more contaminants sooner. But I really don't think you will ever notice or have a pr Born from it.


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post #3 of 9 (permalink) Old 12-15-2015
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I would recommend changing your oil/filter sooner, rather than later. But that's me.

Some will argue that's not necessary, but I wanted to be sure any and all metal fillings etc. were out of my engine.

(I changed mine at 500 miles and 1,500 miles. I have 5300 on the odometer, she purrs like a kitten, and there is no oil use.)
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post #4 of 9 (permalink) Old 12-16-2015
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Your engine is not even close to break in. No harm done, these engines are pretty robust. Suggest you avoid using cruise control for now and just enjoy the power. Just vary rpm's, take in up and down and even a few 6k rpm's and then cool it down. Most important is don't lug engine at low rpm's.

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post #5 of 9 (permalink) Old 01-01-2016
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I drive mine like I stole it. I have 2k miles and haven't changed my oil. Ford told me to change it at 5k miles
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post #6 of 9 (permalink) Old 01-01-2016
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I did my first oil change at 5k and I drive mine pretty harshly. Actually due for my next oil change as its 15k miles

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post #7 of 9 (permalink) Old 01-01-2016
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I'm running a new engine after blowing the original up keeping it below 4k rpm until I'm at around 2k miles on it. Also keeping rev's fairly high and moving them around.

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post #8 of 9 (permalink) Old 01-01-2016
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Quote:
Originally Posted by Gatorstang23 View Post
I did my first oil change at 5k and I drive mine pretty harshly. Actually due for my next oil change as its 15k miles
Ford told me that I can run up 7500 miles on it. They checked it around 1500 miles because I thought it was low. But it wasn't. I don't have to worry about oil changes for 15k miles. They will change it for free the first 3 times.
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post #9 of 9 (permalink) Old 01-13-2016
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Most of the break-in of new or rebuilt engine is the rings mating to the cylinders, with 1700 miles your motor is pretty much through with break-in. Unless you have excess oil usage I wouldn't worry about it, it likely not a problem. Unless your going to be racing the car you'll really never know if it is quicker or slower than most! And no it doesn't take 10 or 15K for break-in, I haven't heard that since back in the 1960's. I would just drive the car like your going to and not worry about it it's probably fine!
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